I was driving my 06 g35 coupe AT everything was normal when all the sudden I noticed both speedometer and rpm gauges dropped to zero although the car was moving… after I noticed the pins dropped to zero the car wouldn’t react correctly when I’d press the pedal and I stopped turned off the car and turned it back on to see if that would do anything but the gauges stayed at zero anyone know what this can be???

 

There are three 10amp fuses in Fuse Block-J/B (cabin fuse box) that supply power to the instrument cluster. Fuses 6, 14, and 19.

I would start there and see if one of them popped.

 

There is also an accessory relay on the BACK of the Fuse Block-J/B, (two total relays on your car), one controls power to fuse 6 and a bunch of other stuff, the other relay is for your AC fan. You can swap the relays to test them, if the AC blower fan runs with both the relays then you know the relay is good.